21881206

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{691}}^1$

素因数の和:987

約数の個数: 16

約数和(自身を含む): 33481728

約数和(自身を除く): 11600522

約数列:

[1, 2, 71, 142, 223, 446, 691, 1382, 15833, 31666, 49061, 98122, 154093, 308186, 10940603, 21881206]

約数ペア:

[(1, 21881206), (2, 10940603), (71, 308186), (142, 154093), (223, 98122), (446, 49061), (691, 31666), (1382, 15833)]